The Saratov Sources and Studying Ways Physiology of Plants in Russia

Stepanov, S. A.; Shliakhtin, G. V.

doi:10.18500/1816-9775-2015-15-4-42-49

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“…При сравнении полученных показателей оказалось, что стеблевые листья достоверно (при уровне значимости P < 0,05) превосходили розеточные по толщине мезофилла, палисадной и губчатой ткани, толщине верхней эпидермы, размерам клеток верхнего слоя мезофилла, плотности опушения нижней эпидермы и характеризовались более сильным развитием ксилемы по отношению к флоэме, проявляя комплекс ксероморфных признаков. Согласно закону, установленному В. Р. Заленским (Stepanov & Shliakhtin, 2015), существует ярусная изменчивость анатомического строения листа, которая проявляется в том, что чем выше расположен лист на стебле, тем сильнее у него выражены признаки ксеромофности, повышающие засухоустойчивость, что согласуется с результатами проведенного исследования. Стеблевые листья не имели достоверно значимых отличий по плотности опушения верхней и нижней стороны листовых пластинок.…”

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Comparative analysis of the leaf anatomy of Echinacea purpurea and E. pallida

Belaeva

Butenkova

2018

Biosys. divers.

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This article contains a comparative analysis of the anatomical structure of the rosette and stem leaves of Echinacea purpurea and E. pallida. The plants were grown on the experimental site of the Siberian Botanical Garden, located in the southeastern part of Tomsk (Western Siberia). Temporary preparations of the leaves were prepared by cutting them on a freezing microtome MZ-2. Photographs of leaf microscopy and microscopic measurements were made on a light microscope. Anomocyte type of stomatal complex is characteristic for the studied species. Leaves of the studied species are amphistomatic, rosette leaves of E. purpurea are hypostomatic. The stomatal index of E. purpurea was 1.5 (stem leaves, upper epidermis) and 24.4–25.5 (lower epidermis). In the leaf blade of E. purpurea, the signs are revealed as mesomorphic (the presence of relatively large dorsoventral leaves, moderate development of integumentary, conducting and mechanical tissues) and a xeromorphic-heliomorphic structure. A complex of xeromorphic-heliophytic features of the E. pallida leaf has been identified, which increase its drought resistance; the mean values of the stomatal index of the upper and lower epidermis were 24.8–28.7. There are 10 characteristics that have significant differences in mean values when comparing leaves of E. purpurea and E. pallida: the size of the stomata of the lower epidermis, the thickness of the mesophyll of the leaf, its layers and the leaf laminae free of the vascular bundle, the area of the vascular bundle and their constituents.

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Section: таблицаunclassified

Comparative analysis of the leaf anatomy of Echinacea purpurea and E. pallida

Belaeva

Butenkova

2018

Biosys. divers.

View full text Add to dashboard Cite

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The Saratov Sources and Studying Ways Physiology of Plants in Russia

Cited by 1 publication

References 1 publication

Comparative analysis of the leaf anatomy of Echinacea purpurea and E. pallida

Comparative analysis of the leaf anatomy of Echinacea purpurea and E. pallida

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